Seal stack assembly

Patent metadata

Field	Value
Publication number	US-11761540-B2
Application number	US-202117445357-A
Country	US
Kind code	B2
Filing date	Aug 18, 2021
Priority date	Aug 19, 2020
Publication date	Sep 19, 2023
Grant date	Sep 19, 2023

Abstract

Systems and methods include providing an annular seal stack for an assembly. The seal stack is disposed within an annulus formed between a probe and a housing of the assembly and configured to provide a radial seal between the probe and the housing. The seal stack includes a first support retainer, a first lipseal, a first seal support system comprising at least one support ring disposed between the first support retainer and the first lipseal, a second support retainer configured to support the first lipseal, a second lipseal, a second seal support system comprising at least one support ring disposed between the second support retainer and the second lipseal, and a third support retainer configured to support the second lipseal.

First claim

What is claimed is:

1. A seal stack assembly, comprising:
a first support retainer having an asymmetrical shape with an inner diameter having a first axial length and an outer diameter having a second axial length, wherein the first axial length is shorter than the second axial length;
a first lipseal; and
a first seal support system disposed between the first support retainer and the first lipseal, wherein the first seal support system comprises a first support ring and a second support ring, wherein the first support ring is disposed between the first support retainer and the second support ring, and wherein the second support ring is disposed between the first support ring and the first lipseal, and a second support retainer supports the first lipseal, wherein the second support retainer comprises an elongated finger portion supporting the first lipseal, wherein the outer diameter of first seal support system is contained within the second axial length.

2. An assembly, comprising:
a probe;
a housing disposed annularly about the probe; and
a seal stack assembly disposed within an annulus formed between the probe and the housing and providing a seal between the probe and the housing, the seal stack assembly comprising:
a first support retainer having an asymmetrical shape with an inner diameter having a first axial length and an outer diameter having a second axial length, wherein the first axial length is shorter than the second axial length;
a first lipseal; and
a first seal support system disposed between the first support retainer and the first lipseal, wherein the first seal support system comprises a first support ring and a second support ring, wherein the first support ring is disposed between the first support retainer and the second support ring, and wherein the second support ring is disposed between the first support ring and the first lipseal, and a second support retainer supports the first lipseal, wherein the second support retainer comprises an elongated finger portion supporting the first lipseal, wherein the outer diameter of first seal support system is contained within the second axial length.

3. A seal stack assembly, comprising:
a first support retainer having an asymmetrical shape with an inner diameter having a first axial length and an outer diameter having a second axial length, wherein the first axial length is shorter than the second axial length;
a first lipseal;
a first seal support system disposed between the first support retainer and the first lipseal, wherein the first seal support system comprises a first support ring and a second support ring, wherein the first support ring is disposed between the first support retainer and the second support ring, and wherein the second support ring is disposed between the first support ring and the first lipseal;
a second support retainer supporting the first lipseal;
a second lipseal;
a second seal support system comprising at least one support ring disposed between the second support retainer and the second lipseal; and
a third support retainer supporting the second lipseal, wherein the second support retainer comprises an elongated finger portion supporting the first lipseal, wherein the outer diameter of first seal support system is contained within the second axial length.

4. The seal stack assembly of claim 1 , wherein the first support retainer comprises a cavity having a curved profile receiving the at least one support ring of the first support system.

5. The seal stack assembly of claim 1 , wherein the first lipseal comprises an inner sealing leg and an outer sealing leg.

6. The seal stack assembly of claim 1 , wherein an inner radius of the first support ring of the first seal support system is smaller than an outer radius of an arcuate portion of the first lipseal.

7. The seal stack assembly of claim 3 , wherein the second support retainer further comprises a cavity having a curved profile receiving the at least one support ring of the second seal support system.

8. The seal stack assembly of claim 3 , wherein the second lipseal comprises an inner sealing leg and an outer sealing leg.

9. The seal stack assembly of claim 3 , wherein the at least one support ring of the second seal support system comprises a first support ring.

10. The seal stack assembly of claim 9 , wherein an inner radius of the first support ring of the second seal support system is smaller than an outer radius of an arcuate portion of the second lipseal.

11. The assembly of claim 3 , wherein the third support retainer comprises an elongated finger portion supporting the second lipseal.

12. The seal stack assembly of claim 1 , wherein the first seal support system further comprises a third support ring disposed between the second support ring of the first seal support system and the first lipseal.

13. The seal stack assembly of claim 9 , wherein the second seal support system further comprises a second support ring disposed between the first support ring of the second seal support system and the second lipseal.

14. The seal stack assembly of claim 13 , wherein the second seal support system further comprises a third support ring disposed between the second support ring of the second seal support system and the second lipseal.

15. The seal stack assembly of claim 1 , wherein the outer radius of the first lipseal comprises a smaller radius than the inner radius of the first support retainer.

16. The seal stack assembly of claim 1 , wherein the outer radius of the second lipseal comprises a smaller radius than the inner radius of the second support retainer.

17. The seal stack assembly of claim 1 , wherein the first support ring comprises a thickness less than a thickness of the first lipseal.

18. The seal stack assembly of claim 1 , wherein the first lipseal comprises a substantially J-shaped cross-sectional profile.

Assignees

• Saint Gobain Performance Plastics Corp

Inventors

• Armitage Mark W
• George Douglas

Classifications

• F16J15/3236 Primary

  with at least one lip for each surface, e.g. U-cup packings · CPC title

• F16J15/3228

  formed by deforming a flat ring · CPC title

• F16J15/3284

  characterised by their structure; Selection of materials · CPC title

• F16J15/18

  with stuffing-boxes for elastic or plastic packings · CPC title

• F16J15/28

  with sealing rings made of metal · CPC title